Place squash in a large microwave-safe bowl. Add water to a depth of 1 inch. Cover with plastic wrap; vent. Microwave at high 8 minutes or until tender. Drain and set aside.
Heat oil in a large nonstick skillet over medium heat. Add rind, ginger, red pepper, and cinnamon stick pieces; cook 1 minute, stirring constantly. Remove and discard cinnamon stick pieces.
Increase heat to medium-high. Add pork to pan, and sauté 4 minutes or until browned. Combine sugar and next 5 ingredients (through salt), stirring with a whisk. Add sugar mixture to pan; cook 2 minutes or until sauce is slightly thickened, stirring constantly. Add squash; toss to coat. Stir in green onions.